Commit Graph

2 Commits

Author SHA1 Message Date
Thomas Weißschuh
dd637f5cd5 platform/x86: dell-pc: avoid double free and invalid unregistration
If platform_profile_register() fails it does kfree(thermal_handler) and
leaves the pointer value around.
Any call to thermal_cleanup() will try to kfree(thermal_handler) again.
This will happen right away in dell_init().
In addition, platform_profile_remove() will be called although no
profile is registered.

NULL out the thermal_handler, so thermal_cleanup() avoids the double free.

Fixes: 996ad41298 ("platform/x86: dell-pc: Implement platform_profile")
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Lyndon Sanche <lsanche@lyndeno.ca>
Link: https://lore.kernel.org/r/20240604-dell-pc-double-free-v1-1-6d81255b2a44@weissschuh.net
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-06-07 16:18:35 +03:00
Lyndon Sanche
996ad41298 platform/x86: dell-pc: Implement platform_profile
Some Dell laptops support configuration of preset fan modes through
smbios tables.

If the platform supports these fan modes, set up platform_profile to
change these modes. If not supported, skip enabling platform_profile.

Signed-off-by: Lyndon Sanche <lsanche@lyndeno.ca>
Link: https://lore.kernel.org/r/20240529174843.13226-4-lsanche@lyndeno.ca
[ij: Adjust #includes into alphabetical order]
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-05-30 11:29:15 +03:00